Because of an oversight a part that has a footprint SOT89-ECB (PNP-BJT), ended up on my board, but when I tried to find a transistor that actually has compatible pin configuration I came out with nothing. So what is the point of even having a footprint like that in a standard library (I used Eagle, but when searching I found this footprint in other libraries as well)? Are there actually compatible parts that I did not find?

  • \$\begingroup\$ It doesn't have to be a PNP \$\endgroup\$ – DKNguyen Aug 22 at 13:27
  • \$\begingroup\$ How about (say) a BCX53? This pinout doesn't seem to be overly unusual. \$\endgroup\$ – Richard the Spacecat Aug 22 at 13:28
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    \$\begingroup\$ @RichardtheSpacecat BCX53 is the standard BCE layout the one I am after has the leads mirored (some datasheets have a bit confusing pinouts). \$\endgroup\$ – Daniel Adamkovič Aug 22 at 13:36
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    \$\begingroup\$ @DaveTweed More just a matter of interest, I wondered why it even exists, if someone happens to know specific part that would be a bonus, but I don't have high hopes for that. \$\endgroup\$ – Daniel Adamkovič Aug 22 at 13:38
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    \$\begingroup\$ @RichardtheSpacecat The BCX53 has the base on the left, emitter on the right when viewed from on top , leads towards you. This is the industry standard SOT89 bipolar pinout. = BCE. A ECB pinout may exist but I don't recall having seen one. BCX53 \$\endgroup\$ – Russell McMahon Aug 22 at 13:59

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